Au纳米颗粒修饰的钴酸镍气凝胶复合电极的制备及电化学性能研究
Preparation and Electrochemical Performance Study of Cobalt Nickelate Aerogel Composite Electrode Modified with Au Nanoparticles
DOI: 10.12677/ms.2025.1511216, PDF,   
作者: 高宇宏, 张 翾, 陈 欢, 周雪娇*：哈尔滨师范大学物理与电子工程学院学院，黑龙江 哈尔滨
关键词: NiCo2O4；Au纳米颗粒；气凝胶电极；电容性能 ；NiCo2O4； Au Nanoparticles； Aerogel Electrode； Capacitive Performance
摘要: 双金属氧化物具有优异的电荷存储性能。本文以双金属氧化物钴酸镍(NiCo2O4)为研究对象，采用新颖的冷冻干燥技术获得超轻NiCo2O4气凝胶材料，利用贵金属Au纳米粒子修饰，获得NiCo2O4/Au气凝胶复合电极材料。该复合电极具有大孔道结构，更有利于电解质离子输运。通过CV，GCD和EIS等电化学技术研究表明，NiCo2O4/Au复合电极在6 M氢氧化钾电解液中可提供1350 F∙g−1的比电容。并且在电流密度10 A∙g−1下经过20,000次的充放电循环测试后，比电容值仍保持初始比电容值的90.65%，表现其良好的循环稳定性。这种超轻的气凝胶复合电极有望在超轻器件等领域有重要应用。
Abstract: Bimetallic oxides have excellent charge storage properties. In this paper, the bimetallic oxide nickel cobalt oxide (NiCo2O4) was used as the research object. A novel freeze-drying technology was used for ultralight NiCo2O4 aerogel material, which was modified by noble metal Au nanoparticles, and NiCo2O4/Au aerogel composite electrode material. The composite electrode has a large pore structure, which is more conducive to the transport of electrolyte ions. The specific capacitance of NiCo2O4/Au composite electrode in 6 M potassium hydroxide electrolyte was 1350 F∙g−1 by CV, GCD and EIS. The specific capacitance is still 90.65% of the initial specific capacitance after 20,000 charge-discharge cycles at a current density of 10 A∙g−1, showing good cycle stability. This ultra-light aerogel composite electrode is expected to have important applications in ultra-light devices and other fields.
文章引用：高宇宏, 张翾, 陈欢, 周雪娇. Au纳米颗粒修饰的钴酸镍气凝胶复合电极的制备及电化学性能研究[J]. 材料科学, 2025, 15(11): 2035-2043. https://doi.org/10.12677/ms.2025.1511216

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